Given is the bar chart illustrating the percentage of disposed waste by 4 methods used in 4 major cities.
Overall, the percentages of waste being processed by landfill and incineration used in the cities are the highest while compositing is the least common method in the cities.
Looking at the statistics for Toronto and Amman, it can be seen that these two cities have the same pattern about the percentage of treated garbage by the four ways. Landfill is the most prevalent method in Toronto and Amman, with about 75% and well-under 50%, respectively. Additionally, there are over 10% of treated waste in Toronto, which is lower than that in Amman by nearly 30%. Besides, recycling is the third most common way at approximately 8% in Toronto and well-over 10% in Amman. Moreover, about 7% of waste is disposed by compositing in Toronto, which is higher than that in Amman by 4 times.
Regarding the information in Madrid and Kuala Lumpur, the percentages of discarded waste by incineration in Madrid and Kuala Lumpur are the highest, at 40% and about 55%, respectively. Contrastly, compositing is the least used method in the cities, with under 10% and approximately 7%, correspondingly. Additionally, for the landfill method, the statistics in Madrid and Kuala Lumpur are under 30% and about 15%, respectively. Finally, the percentage of treated rubbish by recycling in Madrid is the same that in Kuala Lumpur, at about 23% each.